Patent EP-2230216-A1 (EP)
Title: Funnel mechanism of a glass machine
Inventor: DIEKAEMPER LARS
IPC: C03B9/16
Filed: 2010-01-22
Abstract: The funnel mechanism of a glass machine, by which a put away or a swiveling away of the funnel of the glass machine from the preform is realizable after the introduction of the glass drops and a displacement or pivotation of the funnel towards a preform is realizable for the introduction of the glass drops into the preform, comprises a compressed air cylinder drive (3), where the funnel is adjustable or pivotable using a piston (6) of the cylinder drive, and a comparison unit, to which a signal evaluating unit (9) of a displacement sensor (8) and an input-/output unit are connected. The funnel mechanism of a glass machine, by which a put away or a swiveling away of the funnel of the glass machine from the preform is realizable after the introduction of the glass drops and a displacement or pivotation of the funnel towards a preform is realizable for the introduction of the glass drops into the preform, comprises a compressed air cylinder drive (3), where the funnel is adjustable or pivotable using a piston (6) of the cylinder drive, and a comparison unit, to which a signal evaluating unit (9) of a displacement sensor (8) and an input-/output unit are connected. A feed chamber and a discharge chamber of the cylinder drive are connected to a compressed air source over a first- or second valve device. The second valve device, by which the discharge chamber is connectable to the compressed air source, is formed as proportional valve, whose flow cross-section is controlled by a control unit corresponding to the result of target value/actual value comparison related to the piston movement in a compressed air cylinder (4). The first valve device, by which the feed chamber is connectable to the compressed air source, is formed as three/two-way valve or as proportional valve, whose flow cross-section is controlled by the control unit corresponding to the result of target value/actual value comparison related to the piston movement in the compressed air cylinder. The first and second valve devices are arranged in the form of a single valve construction unit and are connected to the common compressed air source. The second proportional valve and the three/two-way valve or the first proportional valve are connectable to a damping device, by which the compressed air stream leaving the compressed air cylinder drive is damped. The displacement sensor, by which the actual position of the piston and the funnel mechanism or the funnel of the glass machine is detectable, is arranged to a piston rod (5) of the cylinder drive and is connected to the signal evaluating unit, by which the displacement sensor signals are convertable into position data, speed data and/or acceleration data or actual value of the piston movement in the compressed air cylinder. The target value are inputted into the comparison unit by the input-/output unit for the piston movement in the compressed air cylinder. The actual value is compared with the target value by the comparison unit for the piston movement in the compressed air cylinder, where a signal corresponding to the deviation of the actual value from the target value is applied to the control unit. The funnel mechanism includes a signaler, by which a signal indicating the feed operation or discharge operation of the piston is applied to the control unit in cooperation with the displacement sensor.